CVE-2021-27550

Name: CVE-2021-27550
Creator: NVD / NIST
Published: 2021-02-23T15:15:15.903+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 1.66%

Last modified Jun 17, 2026

CVE-2021-27550 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Polaris Office v9.102.66 is affected by a divide-by-zero error in PolarisOffice.exe and EngineDLL.dll that may cause a local denial of service. To exploit the vulnerability, someone must open a crafted PDF file.. EPSS estimates a 1.66% chance of exploitation in the next 30 days.

Description

Polaris Office v9.102.66 is affected by a divide-by-zero error in PolarisOffice.exe and EngineDLL.dll that may cause a local denial of service. To exploit the vulnerability, someone must open a crafted PDF file.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

1.66%

73.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-369

Affected Software

Vendor	Product	Versions
Polarisoffice	Polaris Office	9.102.66

References

https://gist.github.com/sqrtrev/1f9986d4bdd1393832c60a97b56e170aExploit, Third Party Advisory
https://gist.github.com/sqrtrev/1f9986d4bdd1393832c60a97b56e170aExploit, Third Party Advisory

Timeline

Published: Feb 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-27550?

How severe is CVE-2021-27550?

CVE-2021-27550 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.66% probability of exploitation in the next 30 days.

How do I fix CVE-2021-27550?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-27550?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST